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CA2205042A1 - Gas turbine vane with a cooled inner shroud - Google Patents

Gas turbine vane with a cooled inner shroud

Info

Publication number
CA2205042A1
CA2205042A1 CA002205042A CA2205042A CA2205042A1 CA 2205042 A1 CA2205042 A1 CA 2205042A1 CA 002205042 A CA002205042 A CA 002205042A CA 2205042 A CA2205042 A CA 2205042A CA 2205042 A1 CA2205042 A1 CA 2205042A1
Authority
CA
Canada
Prior art keywords
inner shroud
gas turbine
cooling
cooling air
turbine vane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002205042A
Other languages
French (fr)
Other versions
CA2205042C (en
Inventor
William E. North
Mark T. Kennedy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority claimed from PCT/US1995/012820 external-priority patent/WO1996015357A1/en
Publication of CA2205042A1 publication Critical patent/CA2205042A1/en
Application granted granted Critical
Publication of CA2205042C publication Critical patent/CA2205042C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/187—Convection cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/80—Platforms for stationary or moving blades
    • F05D2240/81—Cooled platforms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/221—Improvement of heat transfer
    • F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
    • F05D2260/22141—Improvement of heat transfer by increasing the heat transfer surface using fins or ribs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

A gas turbine vane (17) having an inner shroud (26) that is cooled by a portion of the cooling air directed to a cavity (45) between two adjacent rows of discs (55, 56). A portion of the cooling air in the cavity flows through impingement plates (83, 84) and impinges on the inner (98) surface of the inner shroud (26). Another portion of the cooling air flows through a passage (88) in the leading edge (42) of the inner shroud that has a pin fin (89) array for enhanced cooling.
The impingement plates form chambers that collect both the impingement air and the pin fin passage air and direct it through holes (92) in the trailing edge (43) of the inner shroud for cooling of the trailing edge. Longitudinal passages (93, 94) along the side of the inner shroud direct the cooling air from the pin fin passage to the trailing edge (43).
CA002205042A 1994-11-10 1995-10-13 Gas turbine vane with a cooled inner shroud Expired - Lifetime CA2205042C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US33689594A 1994-11-10 1994-11-10
US08/336,895 1994-11-10
PCT/US1995/012820 WO1996015357A1 (en) 1994-11-10 1995-10-13 Gas turbine vane with a cooled inner shroud

Publications (2)

Publication Number Publication Date
CA2205042A1 true CA2205042A1 (en) 1996-05-23
CA2205042C CA2205042C (en) 2007-05-22

Family

ID=38156698

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002205042A Expired - Lifetime CA2205042C (en) 1994-11-10 1995-10-13 Gas turbine vane with a cooled inner shroud

Country Status (1)

Country Link
CA (1) CA2205042C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2653659A3 (en) * 2012-04-19 2017-08-16 General Electric Company Cooling assembly for a gas turbine system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2653659A3 (en) * 2012-04-19 2017-08-16 General Electric Company Cooling assembly for a gas turbine system

Also Published As

Publication number Publication date
CA2205042C (en) 2007-05-22

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20151013